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index b779eaf99cdca3566b6981c877ec9d87aca8bb8f..7667195eee3c1b80d0bd8b0875d3c7f7435e2e1d 100644
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+++ b/README.org
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 * COMMENT -*- mode: org -*-
 #+Date: 2017-01-26
-Time-stamp: <2017-01-26>
+Time-stamp: <2017-01-28>
 
 * an RPN calculator implemented in HTML and client side javascript
-It can be used offline on platforms that support web service.
+It can be used offline on platforms that support service worker.
 
 It use a compute and UI model similar to emacs calc-mode.